Nature Chemical Engineering最新文献_第2页

Adding big data into the equation

Nature Chemical Engineering Pub Date : 2024-11-29 DOI: 10.1038/s44286-024-00142-1

Joseph Sang-Il Kwon

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Analysis articles in the context of chemical engineering

Nature Chemical Engineering Pub Date : 2024-11-29 DOI: 10.1038/s44286-024-00159-6

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Electrochemical ion pumping

Nature Chemical Engineering Pub Date : 2024-11-29 DOI: 10.1038/s44286-024-00157-8

Mo Qiao

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Reaction-driven electrocatalyst restructuring

Nature Chemical Engineering Pub Date : 2024-11-29 DOI: 10.1038/s44286-024-00144-z

Yanfei Zhu

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Design and assessment of electrochemical carbonate-to-ethylene processes

Nature Chemical Engineering Pub Date : 2024-11-20 DOI: 10.1038/s44286-024-00146-x

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Process and techno-economic analyses of ethylene production by electrochemical reduction of aqueous alkaline carbonates

Nature Chemical Engineering Pub Date : 2024-11-20 DOI: 10.1038/s44286-024-00137-y

Anush Venkataraman, Hakhyeon Song, Victor D. Brandão, Chen Ma, Magdalena Salazar Casajus, Carlos A. Fernandez Otero, Carsten Sievers, Marta C. Hatzell, Saket S. Bhargava, Sukaran S. Arora, Carlos Villa, Sandeep Dhingra, Sankar Nair

{"title":"Process and techno-economic analyses of ethylene production by electrochemical reduction of aqueous alkaline carbonates","authors":"Anush Venkataraman, Hakhyeon Song, Victor D. Brandão, Chen Ma, Magdalena Salazar Casajus, Carlos A. Fernandez Otero, Carsten Sievers, Marta C. Hatzell, Saket S. Bhargava, Sukaran S. Arora, Carlos Villa, Sandeep Dhingra, Sankar Nair","doi":"10.1038/s44286-024-00137-y","DOIUrl":"10.1038/s44286-024-00137-y","url":null,"abstract":"Electrolyzer architectures using bipolar membranes (BPMs) to convert alkaline aqueous carbonates into hydrocarbons are a potential solution to overcome limitations of conventional carbon dioxide (CO2) electrolyzers. We present comprehensive process designs, simulations and a techno-economic evaluation of integrated electrolysis-based systems (from CO2 capture to product separation and stream recycling) for the production of ethylene from carbonates. Using three different scenarios for an ethylene plant with a production capacity of 2 million metric tons per year, a set of key projected performance metrics has been determined. Carbonates for electrolysis sourced from direct air capture and flue gas capture scenarios showed equivalent economics in the optimistic scenario. Concentration of capture carbonates to at least 1.5 M by alkali-stable membranes upstream of the electrolyzer is needed to make the overall process feasible. Electrolyzer sizing, configuration and costing are examined in detail to better account for economies of scale. Emerging improvements in BPM-based processes—primarily in the electrolyzer design and BPM performance—can lead to a minimum selling price that is lower than for conventional CO2 electrolysis and approaching that achieved via naphtha-based processes. Future industrial processes for the electrolytic production of ethylene from aqueous carbonate feedstocks are not well understood. The authors develop unit operations and full process designs, evaluate the techno-economics at scale, identify key process requirements and barriers, and elucidate the minimum benchmarks needed for the future commercial viability of this technology.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 11","pages":"710-723"},"PeriodicalIF":0.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00137-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Scalable production of critically thin polyethylene films via multistep stretching

Nature Chemical Engineering Pub Date : 2024-11-01 DOI: 10.1038/s44286-024-00139-w

Runlai Li, Zirui Wang, Weilong Sun, He Zhang, Yuwen Zeng, Xiaoxu Zhao, Wenbing Hu, Hua Deng, Kian Ping Loh, Qiang Fu

{"title":"Scalable production of critically thin polyethylene films via multistep stretching","authors":"Runlai Li, Zirui Wang, Weilong Sun, He Zhang, Yuwen Zeng, Xiaoxu Zhao, Wenbing Hu, Hua Deng, Kian Ping Loh, Qiang Fu","doi":"10.1038/s44286-024-00139-w","DOIUrl":"10.1038/s44286-024-00139-w","url":null,"abstract":"Plastic films are among the most used materials. In many applications, both high strength and low thickness are required. The thickness of free-standing plastic films has recently been reduced to micrometres, 200 nm and even 60 nm. Pushing this boundary further faces considerable challenges, as processability conflicts with stability at the ‘ultrathin’ scale (below ~100–200 nm). Here, to overcome this trade-off, we modulated the entanglement density of plastic chains to identify a maximum stretching processing window. Then, relaxation was introduced during stretching to kinetically stabilize the ultrathin film. Combined, polyethylene film thicknesses were reduced to ~12 nm, near its critical thickness. This critically thin polyethylene reveals physical properties different from its bulk counterparts, such as high mechanical strength (113.9 GPa (g cm–3)–1), abnormal interfacial properties and a high aspect ratio near 108. Potential applications of these films include nuclear fusion ignition support and thin breathable epidermal sensors. Our work reveals advanced processing strategies, distinctive properties and broader applications of plastic films near the processing limit. A multistep stretch–relaxation process is used to produce critically thin polyethylene films. Several key physical properties of the polyethylene films are presented, and their potential applications in nuclear fusion and epidermal sensing are highlighted.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 11","pages":"702-709"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Electrothermal synthesis of commodity chemicals

Nature Chemical Engineering Pub Date : 2024-11-01 DOI: 10.1038/s44286-024-00134-1

Qi Dong, Shu Hu, Liangbing Hu

{"title":"Electrothermal synthesis of commodity chemicals","authors":"Qi Dong, Shu Hu, Liangbing Hu","doi":"10.1038/s44286-024-00134-1","DOIUrl":"10.1038/s44286-024-00134-1","url":null,"abstract":"Electrothermal synthesis of commodity chemicals has received notable interest in recent decades as renewable electricity becomes more available and environmental challenges are increasingly recognized. Representative electrothermal approaches, such as Joule heating, microwaves, induction heating and plasma, have rapidly evolved from operating in millimeter-sized micro-reactors toward modular and even industrial-scale systems. Meanwhile, new chemical engineering concepts, such as dynamic and programmable operation for non-equilibrium chemical reactions using nanosecond- to millisecond-long energy pulsing, spatial and temporal heating by electrifying various reactor components (for example, the reactor walls, catalyst bed or reactant in porous media), and field-enhanced reactions and catalysis, have been discovered to improve synthesis outcomes. Despite the rapid progress of this field, there remain many knowledge gaps and technical hurdles. Here we review the critical engineering advances, analyze the unaddressed challenges and discuss the potential directions for the electrothermal synthesis of commodity chemicals toward its broader implementation for future chemical manufacturing. Electrothermal synthesis of commodity chemicals has received notable interest as renewable electricity becomes more available and environmental challenges are increasingly recognized. This Perspective discusses critical engineering advances, unaddressed challenges and potential directions for the electrothermal synthesis of commodity chemicals toward its broader implementation for future chemical manufacturing.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 11","pages":"680-690"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Miniaturized soft batteries for biomedical implants

Nature Chemical Engineering Pub Date : 2024-10-25 DOI: 10.1038/s44286-024-00135-0

Wenzheng Heng, Dickson R. Yao, Wei Gao

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A microscale soft lithium-ion battery for tissue stimulation

Nature Chemical Engineering Pub Date : 2024-10-25 DOI: 10.1038/s44286-024-00136-z

Yujia Zhang, Tianyi Sun, Xingyun Yang, Linna Zhou, Cheryl M. J. Tan, Ming Lei, Hagan Bayley

{"title":"A microscale soft lithium-ion battery for tissue stimulation","authors":"Yujia Zhang, Tianyi Sun, Xingyun Yang, Linna Zhou, Cheryl M. J. Tan, Ming Lei, Hagan Bayley","doi":"10.1038/s44286-024-00136-z","DOIUrl":"10.1038/s44286-024-00136-z","url":null,"abstract":"Advances in the development of tiny devices with sizes below a few cubic millimeters require a corresponding decrease in the volume of driving power sources. To be minimally invasive, prospective power sources in biomedical devices must be fabricated from soft materials. Previous endeavors with droplet-based devices have produced promising miniature power sources; however, a droplet-based rechargeable battery has remained out of reach. Here we report a microscale soft flexible lithium-ion droplet battery (LiDB) based on the lipid-supported assembly of droplets constructed from a biocompatible silk hydrogel. Capabilities such as triggerable activation, biocompatibility and biodegradability and high capacity are demonstrated. We have used the LiDB to power the electrophoretic translocation of charged molecules between synthetic cells and to mediate the defibrillation and pacing of ex vivo mouse hearts. By the inclusion of magnetic particles to enable propulsion, the LiDB can function as a mobile energy courier. Our tiny versatile battery will thereby enable a variety of biomedical applications. The development of tiny, soft and biocompatible batteries to power minimally invasive biomedical devices is of critical importance. Here the authors present a microscale soft rechargeable lithium-ion battery based on the lipid-supported assembly of silk hydrogel droplets that enables a variety of biomedical applications.","PeriodicalId":501699,"journal":{"name":"Nature Chemical Engineering","volume":"1 11","pages":"691-701"},"PeriodicalIF":0.0,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44286-024-00136-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142754188","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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